On Tue, Sep 24, 2024 at 09:42:23PM -0400, Eli Schwartz wrote > If you actually want to disable ipv6, instead of insanely rebuilding > binaries to use untested broken segfaulting code, use the sysctl > knob to tell the kernel "when asked to give some application a bit > of internet traffic, don't use ipv6". > > net.ipv6.conf.all.disable_ipv6
My system is actually very stable. In the shitstorm that erupted on this list at "ipv6" enabling I did not see any mention of sysctl. In my /etc/default/grub file I have... GRUB_CMDLINE_LINUX_DEFAULT="noexec=on net.ifnames=0 ipv6.disable=1" With this setting is it guaranteed that a program compiled with "ipv6" flag will not try IPV6 first and timeout before dropping down to IPV4? How OS-specific is this? I "asked Mr. Google" and the NordVPN web page recommended for Redhat based distros... net.ipv6.conf.all.disable_ipv6=1 net.ipv6.conf.default.disable_ipv6=1 net.ipv6.conf.tun0.disable_ipv6=1 For Debian-based distros... net.ipv6.conf.all.disable_ipv6 = 1 net.ipv6.conf.default.disable_ipv6 = 1 net.ipv6.conf.lo.disable_ipv6 = 1 net.ipv6.conf.tun0.disable_ipv6 = 1 Other answers for disabling IPV6 include stuff like... net.ipv6.conf.all.disable_ipv6 = 1 net.ipv6.conf.default.disable_ipv6 = 1 net.ipv6.conf.lo.disable_ipv6 = 1 net.ipv6.conf.eth0.disable_ipv6 = 1 BTW, I did *NOT* have IPV6 enabled when the USE flag changed... [x8940][root][~] grep IPV6 /usr/src/linux/.config # CONFIG_IPV6 is not set > That's quite the bloated collection of enabled USE flags you have > there -- lots of stuff that are much more bloated than ipv6, in > fact. :) Stuff that I don't use is left disabled. I occasionally look at my package.use file. If a flag is enabled for multiple apps there, I run USE="flag" emerge -pv --changed-use --deep --pdate @world If there isn't much new stuff pulled in I'll... * enable the flag in make.conf * delete the enabling entries in package.use * disable, in package.use, the flag for new stuff that tha flag pulls in This minimizes the size of my package.use file. Note: this is optimal for the collection of apps *THAT I USE*. YMMV. -- There are 2 types of people 1) Those who can extrapolate from incomplete data
